github - ghsa-5rjr-qvpw-gg98

ghsa-5rjr-qvpw-gg98

Vulnerability from github

Published

2024-07-16 12:30

Modified

2024-07-16 12:30

Details

In the Linux kernel, the following vulnerability has been resolved:

cfg80211: fix race in netlink owner interface destruction

My previous fix here to fix the deadlock left a race where the exact same deadlock (see the original commit referenced below) can still happen if cfg80211_destroy_ifaces() already runs while nl80211_netlink_notify() is still marking some interfaces as nl_owner_dead.

The race happens because we have two loops here - first we dev_close() all the netdevs, and then we destroy them. If we also have two netdevs (first one need only be a wdev though) then we can find one during the first iteration, close it, and go to the second iteration -- but then find two, and try to destroy also the one we didn't close yet.

Fix this by only iterating once.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-48784"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-07-16T12:15:03Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncfg80211: fix race in netlink owner interface destruction\n\nMy previous fix here to fix the deadlock left a race where\nthe exact same deadlock (see the original commit referenced\nbelow) can still happen if cfg80211_destroy_ifaces() already\nruns while nl80211_netlink_notify() is still marking some\ninterfaces as nl_owner_dead.\n\nThe race happens because we have two loops here - first we\ndev_close() all the netdevs, and then we destroy them. If we\nalso have two netdevs (first one need only be a wdev though)\nthen we can find one during the first iteration, close it,\nand go to the second iteration -- but then find two, and try\nto destroy also the one we didn\u0027t close yet.\n\nFix this by only iterating once.",
  "id": "GHSA-5rjr-qvpw-gg98",
  "modified": "2024-07-16T12:30:39Z",
  "published": "2024-07-16T12:30:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48784"
    },
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    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

cve-2022-48784

Vulnerability from cvelistv5

Published

2024-07-16 11:13

Modified

2024-11-04 12:16

Severity ?

Summary

cfg80211: fix race in netlink owner interface destruction

References

▼	URL	Tags
	https://git.kernel.org/stable/c/241e633cb379c4f332fc1baf2abec95ec840cbeb
	https://git.kernel.org/stable/c/c979f792a2baf6d0f3419587668a1a6eba46a3d2
	https://git.kernel.org/stable/c/f0a6fd1527067da537e9c48390237488719948ed

Impacted products

Vendor

Product

Version

▼

Linux

Version: ea6b2098dd02
Version: ea6b2098dd02
Version: ea6b2098dd02

Linux

Version: 5.13

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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